結果
| 問題 | No.3258 Xor Division Game |
| コンテスト | |
| ユーザー |
Kude
|
| 提出日時 | 2025-09-06 00:08:15 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.90.0) |
| 結果 |
CE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 2,757 bytes |
| 記録 | |
| コンパイル時間 | 2,348 ms |
| コンパイル使用メモリ | 347,456 KB |
| 最終ジャッジ日時 | 2026-07-14 17:05:41 |
| 合計ジャッジ時間 | 3,366 ms |
|
ジャッジサーバーID (参考情報) |
judge1_0 / judge3_0 |
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。(リジャッジ後のコンパイルエラーは公開されます)
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:54:26: error: class template argument deduction failed:
54 | value_compression vc = f;
| ^
main.cpp:54:26: error: call of overloaded 'value_compression({anonymous}::VI&)' is ambiguous
main.cpp:54:26: note: there are 3 candidates
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/vector:68,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/functional:66,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:55,
from main.cpp:1:
/home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/stl_vector.h:631:7: note: candidate 1: 'value_compression(const std::vector<_Tp>&) -> {anonymous}::value_compression<_Tp> [with S = int]'
631 | vector(const vector& __x)
| ^~~~~~
/home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/stl_vector.h:458:11: note: candidate 2: 'value_compression(std::vector<_Tp>) -> {anonymous}::value_compression<_Tp> [with S = int]'
458 | class vector : protected _Vector_base<_Tp, _Alloc>
| ^~~~~~
main.cpp:26:3: note: candidate 3: 'value_compression(std::vector<_Tp>) -> {anonymous}::value_compression<S> [with S = int]'
26 | value_compression(vector<S> v) : vector<S>(move(v)) {}
| ^~~~~~~~~~~~~~~~~
main.cpp:54:26: note: explicit deduction guides not considered for copy-initialization
54 | value_compression vc = f;
| ^
ソースコード
#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
template <class S>
struct value_compression : vector<S> {
bool built = false;
using VS = vector<S>;
using VS::VS;
value_compression(vector<S> v) : vector<S>(move(v)) {}
void build() {
sort(this->begin(), this->end());
this->erase(unique(this->begin(), this->end()), this->end());
built = true;
}
template <class T>
void convert(T first, T last) {
assert(built);
for (; first != last; ++first) *first = (*this)(*first);
}
int operator()(S x) {
assert(built);
return lower_bound(this->begin(), this->end(), x) - this->begin();
}
void clear() {
this->clear();
built = false;
}
};
} int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
VI f(n);
rep(i, n) cin >> f[i];
value_compression vc = f;
vc.build();
vc.convert(all(f));
int sz = vc.size();
VVI pos(sz);
rep(i, n) pos[f[i]].emplace_back(i);
VI cnt(sz);
vector<list<int>::iterator> v2it(sz);
list<int> v_ok;
auto add = [&](int i) {
int v = f[i];
if (cnt[v] == 0) {
v_ok.emplace_front(v);
v2it[v] = v_ok.begin();
} else if (cnt[v] == 1) v_ok.erase(v2it[v]);
cnt[v]++;
};
auto rmv = [&](int i) {
int v = f[i];
cnt[v]--;
if (cnt[v] == 0) v_ok.erase(v2it[v]);
else if (cnt[v] == 1) {
v_ok.emplace_front(v);
v2it[v] = v_ok.begin();
}
};
rep(i, n) add(i);
int ans = 0;
auto dfs = [&](auto&& self, int l, int r) {
if (v_ok.empty()) {
for (int i = l; i < r; i++) rmv(i);
return;
}
int v = v_ok.front();
int c = *ranges::lower_bound(pos[v], l);
rmv(c);
ans++;
if (c - l < r - (c + 1)) {
for (int i = l; i < c; i++) rmv(i);
self(self, c + 1, r);
for (int i = l; i < c; i++) add(i);
self(self, l, c);
} else {
for (int i = c + 1; i < r; i++) rmv(i);
self(self, l, c);
for (int i = c + 1; i < r; i++) add(i);
self(self, c + 1, r);
}
};
dfs(dfs, 0, n);
cout << (ans % 2 ? "Alice" : "Bob") << '\n';
}
Kude